A researcher at Sun Microsystems. Annotated bibliographies on fractals and cryptography, and related papers, which may be downloaded in PostScript format. Graphics of Voronoi fractals (dividing the plane into regions closest to a given point) and fractals based on the Mandelbrot set, but with negative or fractional exponents. Java applets: zoom in on the Mandelbrot set, play the Turnablock game against the computer, try to solve the rolling cubes puzzle, or, more seriously, view a graph of AIDS statistics.